linux-kernel - [PATCH 01/45] drm/msm/dp: dont call dp_catalog_ctrl_mainlink_ctrl in dp_ctrl_configure_source

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241205-dp_mst-v1-1-f8618d42a99a@quicinc.com>
Date: Thu, 5 Dec 2024 20:31:32 -0800
From: Abhinav Kumar <quic_abhinavk@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>,
        Stephen Boyd <swboyd@...omium.org>,
        "Chandan
 Uddaraju" <chandanu@...eaurora.org>,
        Guenter Roeck <groeck@...omium.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: Vara Reddy <quic_varar@...cinc.com>, Rob Clark <robdclark@...omium.org>,
        Tanmay Shah <tanmay@...eaurora.org>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Jessica Zhang
	<quic_jesszhan@...cinc.com>,
        Laurent Pinchart
	<laurent.pinchart@...asonboard.com>,
        Abhinav Kumar
	<quic_abhinavk@...cinc.com>
Subject: [PATCH 01/45] drm/msm/dp: dont call dp_catalog_ctrl_mainlink_ctrl
 in dp_ctrl_configure_source_params()

Once the link has already been setup there is no need to call
dp_catalog_ctrl_mainlink_ctrl() as this does a reset on the mainlink
thereby tearing down the link briefly.

Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support")
Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
---
 drivers/gpu/drm/msm/dp/dp_ctrl.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index bc2ca8133b790fc049e18ab3b37a629558664dd4..a8069f7c4773f087229727dc38c9af0d6d84f863 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -178,7 +178,6 @@ static void msm_dp_ctrl_configure_source_params(struct msm_dp_ctrl_private *ctrl
 	u32 cc, tb;
 
 	msm_dp_catalog_ctrl_lane_mapping(ctrl->catalog);
-	msm_dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, true);
 	msm_dp_catalog_setup_peripheral_flush(ctrl->catalog);
 
 	msm_dp_ctrl_config_ctrl(ctrl);

-- 
2.34.1